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Linear Bushings and ShaftsInch Series

The Drive & Control Company

2 Bosch Rexroth Corporation Bushings and Shafts Inch Series RA 99 110 (2008.06)

Linear Motion and Assembly Technologies

Ball Rail Systems Roller Rail Systems Linear Bushings and Shafts

Ball Screw Drives Linear Motion Systems Basic Mechanical Elements

Manual Production Systems Assembly Conveyors VarioFlow Conveyors

3Bosch Rexroth CoporationRA 99 110 (2008.06) Bushings and Shafts Inch Series

Product Overview 4Quick Reference 6 Dimensions and Load Capacities

General Technical Data & Mounting Instructions 8Standard Linear Bushings 16 R0750-../ R0752-../ R0753-..

Super Linear Bushings 24 R0755-../ R0756-..

Cast Iron Pillow Block Sets 30 R1750-../ R1752-../ R1753-..

Aluminum Pillow Block Sets 38- Single Sets R1755-../ R1756-../ R1757-..

- Twin Sets R1760-../ R1762-../ R1763-..

Precision Steel Shaft 50 R1700-../ R1771-..

Shaft Support Rail Assemblies 59 R1769-../R1770-..

Shaft Support Rails 62- High Profi le R1767-..

- Low Profi le R1768-..

Shaft Support Blocks 65 R1759-..

External Retaining Rings 66 XR-..A / XRS-..A


Linear Bushings Standard R0750-..to R0753-.. - closed/adjustable/open - precision bore - with or without internal seals - corrosion-resistant

PRODUCT TYPE FEATURES

Super R0755-..to R0756-.. - closed/open - self-aligning adjustable bore - with or without internal seals - light weight/high load capacity

Linear Pillow Cast Iron Blocks R1750-..to R1753-.. - closed/adjustable/open Block Sets - rigid cast iron - self-aligning sleeve - standard bushing insert

Linear Shaft Aluminum blocks - closed/adjustable/open and Assemblies Single R1755-..to R1757-.. - super bushing insert Twin R1760-..to R1763-.. - lightweight - anodized blocks Precision Steel Shaft R1700-..to R1771-.. - carbon/stainless steel - plain or pre-drilled - class L Shaft Support - aluminum/steel Rail Assemblies R1769-.. to R1770-..

Shaft Supports Support Rails R1767-..to R1768-.. - aluminum/steel material - with or without base fl ange - standard and low profi le - rigid cast iron block


Standard Linear BushingsSizes 1/4" through to 4"Load capacities: 46 to 4061 lbs

Support Rails and BlocksSizes 1/2" through to 2" Support blocks sizes 1/4" through to 2"


L

(Table 1)

*Groove dimensions conform to MIL-R-21248B (Industrial External Retaining Rings)

Note: Dimensions listed are nominal measurements in inches - see bushing spec sheets for tolerances

Nominal ShaftDiameter

Standard Linear Bushings Super Linear Bushings

D CL C1*C2 D CL C1 *C2

0.2500

0.3750

0.5000

0.6250

0.7500

1.0000

1.2500

1.5000

2.0000

2.5000

3.0000

4.0000

0.5000

0.6250

0.8750

1.1250

1.2500

1.5625

2.0000

2.3750

3.0000

3.7500

4.5000

6.0000

0.7500

0.8750

1.2500

1.5000

1.6250

2.2500

2.6250

3.0000

4.0000

5.0000

6.0000

8.0000

0.5110

0.6358

0.9625

1.1039

1.1657

1.7547

2.0047

2.4118

3.1917

3.9760

4.7260

6.2580

0.0390

0.0390

0.0459

0.0559

0.0559

0.0679

0.0679

0.0859

0.1029

0.1200

0.1200

0.1389

0.5000

0.6250

0.8750

1.1250

1.2500

1.5625

2.0000

2.3750

3.0000

0.750

0.875

1.250

1.500

1.625

2.250

2.625

3.000

4.000

0.515

0.703

1.032

1.112

1.272

1.886

2.011

2.422

3.206

0.0390

0.0390

0.0459

0.0559

0.0559

0.0679

0.0679

0.0859

0.1029


Load Capacities

Load Correction Factor (fmax)

Figure 2 illustrates the basic theory of Load Capacity Cmin and Cmax given in table 3. Cmin and Cmax represent the bushing capacity rat-ing if the direction of load in relation to ball position is known.

The fmax load correction factor is used to calculate the maximum load capacity when the direction of load is known, and is shared by two or more ball circuits depending on the size of Linear Bushing.

NominalShaft

Diameter(Standard)

Load Correction Factor

fmax

(Table 2)

1/4’’

3/8’’-5/8’’

3/4’’

1-4’’

1.000

1.414

1.463

1.280

Nominal Shaft Diameter

Standard Linear BushingsDynamic Dynamic Static C (lbf) C (lbf) Co (lbf) min. **max.

Super Linear Bushing Dynamic Dynamic Static C (lbf) C (lbf) Co (lbf) min. **max.

(Table 3)

**Max. ratings are based upon the use of Load Correction Factor (fmax) in Table 2

Note: Load ratings are based upon a nominal travel life of 2,000,000 inches, operating on a shaft with a hardness range of Rc 58-64.

0.2500

0.3750

0.5000

0.6250

0.7500

1.0000

1.2500

1.5000

2.0000

2.5000

3.0000

4.0000

46

51

115

174

194

221

353

491

860

1058

1654

3173

46

72

163

246

284

283

452

628

1101

1354

2117

4061

60

71

176

266

308

353

617

905

1787

2250

3600

7830

60

95

230

401

470

851

1231

1483

2430

85

134

325

587

602

1089

1576

1898

3110

80

120

290

502

592

1062

1532

1852

3038

NominalShaft

Diameter(Super)

Load Correction Factor

fmax

1/4’’ - 1/2’’

5/8’’

3/4’’ - 2’’

1.414

1.463

1.280

(Figure 2)

C max = C min fmax ·

Capacitiy Rating


Calculating Travel Life

In determining travel life of a Linear Bushing, there are several factors to be considered. These factors are the load rating of linear bushing, resultant forces acting on the linear bushing, shaft hardness, and operating temperature.

The values for dynamic load capacities (C) have been calculated based on a nominal travel life of 2,000,000 inches.

The formula for calculating travel life is as follows:

L = [ C • fH • ft]3 • 2 • 106

Lh = 2 • s • n • 60

Shaft Hardness Factor - fH

0 10 20 30 40 50 60 70

1,0

0,8

0,6

0,4

0,2

0

L = nominal travel life (inches)

C = basic dynamic load rating (lbs)

P = resultant of external forces (lbs)

fH = shaft hardness factor

ft = temperature factor

Lh = nominal rated life (hrs)

s = stroke length (inches)

n = stroke repetition rate (full cycle) (min-1)

Shaft hardness, Rockwell C

Har

dnes

s fa

ctor

f H

Chart for determination of hardness factor fH

Bushing temperature, oF 212 255 300 345 395Temperature factor, ft 1 0.95 0.90 0.84 0.73

(Table 4)

General Technical Data & Mounting Instructions

P

L


P P

fH ft fL

Travel Life Factor - fL Chart for determination of travel life factor - fL

Friction Evaluation - F Frictional Resistance is expressed:

Calculating frictional resistance requires F = μ P + f values for load and seal resistance.

Coeffi cient of Friction - μ

Transition from low to high speeds in theBosch Rexroth Assemblies is smooth due to the extremely low friction coeffi cients.

1 2 3 5 10 10008006004002006020 40 80 100

1.0

0,9

0.8

0.7

0.6

0.5

0.4

0.3

0.2

0.1

Trav

el li

fe fa

ctor

f L

Chart for determination of travel life factor

Calculating Load Capacity

The formula for calculating load capacity is as follows:

C = dynamic load capacity (lbs)P = resultant of external forces (lbs)

fH = shaft hardness factorft = temperature factorfL = travel life factor

F = frictional resistance (lbs)μ = coeffi cient of friction (Table 5)P = load (lbs)f* = seal resistance (lbs)*(range .4 to 1.1 lbs)

C =

(Table 5)

** Based upon normal loading factors and proper lubrication

Bushing Type **Coeffi cient of

friction (μ)

Standard R0750 to R0753 0.002 to 0.004

Super R0755 to R0756 0.002 to 0.003

Travel life L [2 106]

·

·

· ·


Type Vmax

(ft/s)

Standard and Super Bushing, diameters 1/4’’ - 4’’ 5

(Table 6)

Rexroth Linear Bushings are supplied with an anti-corrosion agent that provides cor-rosion-resistant protection for their steel components. Bushings and linear sets must be lubricated prior to use. It is recommended that either grease or oil be used as the primary lubricant.

In most cases, the use of grease as a lubricant is preferable because it is more viscous than oil. Therefore, the grease will help to seal off the Linear Bushing and adhere to its surfaces better than oil. Longer relube intervals will result.

For Lubrication*: Use either a petroleum or ester base lubricant, or turbine oil confor-ming to ISO Standards G32 to G68 or lithium based grease grade NLGI 2.

Examples of factors affecting lubrication intervals: • Load • Velocity • Motion sequence • Temperature

Where short relube intervals may be necessary:

• High loads • High velocity (up to Vmax) • Short stroke (stroke is shorter than length of linear bushing) • Low resistance to aging in the lubricant

Normal re-lubrication service intervals are recommended to be performed every 500,000 inches of travel or as needed.

*Note: For best results, observe the lubricant manufacturer’s instruction for use.

General Technical Data & Mounting Instructions


Figure 1 Figure 2Retention by external retaining rings. Retention by housing shoulder and threaded cap.

Figure 3 Figure 4Retention by cover plate and Retention by internal retaining rings.external snap ring.

Note: Linear Bushings should be handled with care during installation into the housing bore. A slight chamfer is preferred on the leading edge of the housing bore to prevent damage to the Linear Bushing during installation.

For simple bushing installation use Rexroth Aluminum or Cast Iron Pillow Blocks.

Available in closed, adjustable, open, single, twin, or fl ange styles.

(See the section for Pillow Block Sets starting on Page 30.)

Proper housing bore dimension, shaft diameter, and shaft alignment are criti-cal for accuracy and extended service life of a Linear Bushing assembly.

Rexroth recommends a slight pressfi t on both the Standard and Super Linear Bushing series. This can vary depen-ding upon assembly confi guration.

Mounting Examples

Pillow Blocks


Note: Self-aligning bushings will not compensate for shaft out-of-parallelism specifi cations.

Assembly during installation, as this could cause early failure of the bushing.In order for components to operate properly, ensure that the mounting surface, bore tolerance and the proper shaft diameter are accurate prior to installation.

Clearance between the bushing bore and shaft is controlled by the housing bore tolerance and shaft diameter tolerance. These should be matched for a close tolerance fi t.

Be careful of an interference fi t between the outside diameter of the Linear Bushing and the bore diameter of the housing. An interference between the Linear Bushing and housing bore may cause a reduction in life for both the bushing and shaft, and may also effect the performance.

Parallelism on shaft alignment is critical for accuracy and to prevent binding of the assembly during operation. Bosch Rexroth recommends that parallelism not exceed .001” between shafts along the length of the assembly.

Step 1

Align the Master Shaft to reference points that are parallel to the centerline then secure mounting bolts.


To ensure the optimal performance of Rexroth Linear Bushings, precision shafts and housings are essential.

Appropriate clearance between the Rexroth Bushings and shaft is necessary for reliable performance. Inadequate radial clearance could cause premature failure as well as rough travel.

Dimensional tolerance, hardness and surface fi nish of the shaft greatly affect the operational performance of Linear Bushings.

The shaft must meet these specifi cations:

• Correct O.D. tolerance of the nominal shaft size on table 60, page 52.• Hardness of HRC 60-64. Hardness of less that HRC 60 will dramatically

reduce life and permissible load. Hardness over HRC 64 will accelerate ball wear.

• Depth must be a minimum of .04 inches.• Surface fi nish of 14 RA microinches (Ra 0.35) or less.

Proper selection and sizing of a housing bore will ensure consistent bushing performance. Rexroth Bushing housing bore recommendations offer slip-fi t with the bushing O.D. for improved service life.

See ‘Recommended Housing Bore’ section in the Dimensions and Specifi ca-tions pages for Linear Inch Bushings. ISO recommendations are indicated on Table 7, page 14.

Recommeded Tolerance for Housing Bore


Einheitsbohrung

Tolerances in μm = 0.001 mm

Millimeters μm Inches

1 millimeter 1 1000 0.0393701

1 μm 0.001 1 3.93701 x 10–5

1 inch 25.4 25400 1

Conversion from millimeters to inches

Example of conversion from μm to inches:

What are the tolerances (in inches) for a bore of 3.5 inch diameter?Bore diameter 3.5 inch = 3.5 · 25.4 mm = 88.9 mmFor a bore diameter of 88.9 mm and a tolerance range of H7, the upper tole-rance limit is +35 μm and the lower tolerance limit 0 μmMax. size = +35 μm = +35 · 3.93701 x 10–5 inch = 1.3779 x 10–3 inchMin. size = 0 μm (0 inch)

Rated ISO Tolerances for inside dimensionsdimensions (mm) G7 H5 H6 H7 H8 H11 H12 H13 JS6 JS7 JS14 K6 K7 M6 P9

between 3 +16 +5 +8 +12 +18 +75 +120 +180 +4 +6 +150 +2 +3 –1 –12and 6 +4 0 0 0 0 0 0 0 –4 –6 –150 –6 –9 –9 –42

between 6 +20 +6 +9 +15 +22 +90 +150 +220 +4.5 +7.5 +180 +2 +5 –3 –15and 10 +5 0 0 0 0 0 0 0 –4.5 –7.5 –180 –7 –10 –12 –51

between 10 +24 +8 +11 +18 +27 +110 +180 +270 +5.5 +9 +215 +2 +6 –4 –18and 18 +6 0 0 0 0 0 0 0 –5.5 –9 –215 –9 –12 –15 –61

between 18 +28 +9 +13 +21 +33 +130 +210 +330 +6.5 +10.5 +260 +2 +6 –4 –22and 30 +7 0 0 0 0 0 0 0 –6.5 –10.5 –260 –11 –15 –17 –74

between 30 +34 +11 +16 +25 +39 +160 +250 +390 +8 +12.5 +310 +3 +7 –4 –26and 50 +9 0 0 0 0 0 0 0 –8 –12.5 –310 –13 –18 –20 –88

between 50 +40 +13 +19 +30 +46 +190 +300 +460 +9.5 +15 +370 +4 +9 –5 –32and 80 +10 0 0 0 0 0 0 0 –9.5 –15 –370 –15 –21 –24 –106

between 80 +47 +15 +22 +35 +54 +220 +350 +540 +11 +17.5 +435 +4 +10 –6 –37and 120 +12 0 0 0 0 0 0 0 –11 –17.5 –435 –18 –25 –28 –124

between 120 +54 +18 +25 +40 +63 +250 +400 +630 +12.5 +20 +500 +4 +12 –8 –43and 180 +14 0 0 0 0 0 0 0 –12.5 –20 –500 –21 –28 –33 –143

between 180 +61 +20 +29 +46 +72 +290 +460 +720 +14.5 +23 +575 +5 +13 –8 –50and 250 +15 0 0 0 0 0 0 0 –14.5 –23 –575 –24 –33 –37 –165

(Table 7)

(Table 8)


Einheitswelle

Tolerances in μm = 0.001 mm

Rated ISO Tolerances for outside dimensionsdimensions (mm) g7 h5 h6 h7 h8 h11 h12 h13 js6 js7 js14 k6 k7 m6 p9

between 3 –4 0 0 0 0 0 0 0 +4 +6 +150 +9 +13 +12 +42and 6 –16 –5 –8 –12 –18 –75 –120 –180 –4 –6 –150 +1 +1 +4 +12

between 6 –5 0 0 0 0 0 0 0 +4.5 +7.5 +180 +10 +16 +15 +51and 10 –20 –6 –9 –15 –22 –90 –150 –220 –4.5 –7.5 –180 +1 +1 +6 +15

between 10 –6 0 0 0 0 0 0 0 +5.5 +9 +215 +12 +19 +18 +61and 18 –24 –8 –11 –18 –27 –110 –180 –270 –5.5 –9 –215 +1 +1 +7 +18

between 18 –7 0 0 0 0 0 0 0 +6.5 +10.5 +260 +15 +23 +21 –and 30 –28 –9 –13 –21 –33 –130 –210 –330 –6.5 –10.5 –260 +2 +2 +8

between 30 –9 0 0 0 0 0 0 0 +8 +12.5 +310 +18 +27 +25 –and 50 –34 –11 –16 –25 –39 –160 –250 –390 –8 –12.5 –310 +2 +2 +9

between 50 –10 0 0 0 0 0 0 0 +9.5 +15 +370 +21 +32 +30 –and 80 –40 –13 –19 –30 –46 –190 –300 –460 –9.5 –15 –370 +2 +2 +11

between 80 –12 0 0 0 0 0 0 0 +11 +17.5 +435 +25 +38 +35 –and 120 –47 –15 –22 –35 –54 –220 –350 –540 –11 –17.5 –435 +3 +3 +13

between 120 –14 0 0 0 0 0 0 0 +12.5 +20 +500 +28 +43 +40 –and 180 –54 –18 –25 –40 –63 –250 –400 –630 –12.5 –20 –500 +3 +3 +15

between 180 –15 0 0 0 0 0 0 0 +14.5 +23 +575 +33 +50 +46 –and 250 –61 –20 –29 –46 –72 –290 –460 –720 –14.5 –23 –575 +4 +4 +17

(Table 9)


Standard Series

Closed TypeStandard bushing with precision fi xed bore.

Adjustable TypeFor use when zero clearance or pre-load is required.

Open TypeFor use with assemblies where the shaft is fully supported.

Super Series

Closed TypeSelf-aligning bushing with high load capacity and adjustable working bore.

Open TypeFor use with the assemblies where the shaft is fully supported.

Page

18

20

22

26

28


Standard Linear Bushings

Types

• Closed

• Adjustable

• Open

Advantages

• Low friction• High running speeds• Sturdy, solid steel construction suited

to industrial workshop environments• Insensitive to dirt, an important fea-

ture for industrial environments

Temperature Ratings

The Rexroth Standard Linear Bushing consists of:

• A hardened and ground outer sleeve• Low noise resin ball retainer• Balls made of quality anti-friction bearin-

steel• Available integral seal design• Also available with outer sleeve and

balls made of corrosion-resistant anti-friction bearing steel

• Continuous: -4oF to 180oF


Standard Linear Bushings, 0750-Closed type - for use on an unsupported shaft

Structural design

• Hardened and ground outer sleeve• Low noise, lightweight resin ball

retainer• Balls made of high quality anti- friction bearing steel• With or without integral seals

(Table 10)

Consult factory for details and availability:Single seal versions R0750 1..-..Corrosion resistant series R0750 .. 53(0753 not available for 2.5", 3.0" and 4.0")

* Sizes available in steel ball cage only**Commercial series XR-rings with end lugs

(1) See page 66 for retaining ring dimensions

NominalShaftDiameter (in.)

without seals with two seals

Part NumbersMass (lb)

Corresponding External Retaining Ring (1)

Ordering Data

0.2500

0.3750

0.5000

0.6250

0.7500

1.0000

1.2500

1.5000

2.0000

2.5000

3.0000

4.0000

R0750 004 00

R0750 006 00

R0750 008 00

R0750 010 00

R0750 012 00

R0750 016 00

R0750 020 00

R0750 024 00

R0750 032 00

*R0750 040 15

*R0750 048 15

*R0750 064 15

R0750 204 00

R0750 206 00

R0750 208 00

R0750 210 00

R0750 212 00

R0750 216 00

R0750 220 00

R0750 224 00

R0750 232 00

*R0750 240 15

*R0750 248 15

*R0750 264 15

0.02

0.03

0.09

0.19

0.23

0.44

0.98

1.48

2.52

5.73

9.66

22.49

R987 145 915 XR-4A

R987 145 916 XR-6A

R987 145 917 XR-8A

R987 145 918 XR-10A

R987 145 910 XR-12A

R987 145 911 XR-16A

R987 145 919 XR-20A

R987 145 912 XR-24A

R987 145 913 XR-32A

call factory XR-40**



New Part Old Part Number Number


L

Bore d D(1) C L(2) C1 C2 D1

(Table 11)


RecommendedHousingBore (3)

Load Capacity (4)

dyn. stat.

C (lbf) Co (lbf)

No. ofBall Circuits

Specifi cations

(Table 12)

Notes:

(1) Outer diameter tolerance see ISO table, page 15.

(2) Length tolerance - Bore size -

Ø 0.2500- 0.7500 + 0/ -0.008’’Ø 1.0000 - 2.5000 + 0/ -0.012’’Ø 3.0000 - 4.0000 + 0/ -0.016’’

(3) Transition fi t

(4) See table 2 on page 7 for load correction factors

.2500/.2496

.3750/.3746

.5000/.4996

.6250/.6246

.7500/.7496

1.0000/.9996

1.2500/1.2495

1.5000/1.4995

2.0000/1.9995

2.5000/2.4994

3.0000/2.9994

4.0000/3.9992

0.5000

0.6250

0.8750

1.1250

1.2500

1.5625

2.0000

2.3750

3.0000

3.7500

4.5000

6.0000

0.7500

0.8750

1.2500

1.5000

1.6250

2.2500

2.6250

3.0000

4.0000

5.0000

6.0000

8.0000

0.5110

0.6358

0.9625

1.1039

1.1657

1.7547

2.0047

2.4118

3.1917

3.9760

4.7260

6.2580

0.0390

0.0390

0.0459

0.0559

0.0559

0.0679

0.0679

0.0859

0.1029

0.1200

0.1200

0.1389

0.4687

0.5880

0.8209

1.0590

1.1760

1.4687

1.8859

2.2389

2.8379

3.5519

4.3100

5.7450

0.2500

0.3750

0.5000

0.6250

0.7500

1.0000

1.2500

1.5000

2.0000

2.5000

3.0000

4.0000

0.5000 / 0.5004

0.6250 / 0.6254

0.8750 / 0.8755

1.1250 / 1.1255

1.2500 / 1.2506

1.5625 / 1.5631

2.0000 / 2.0007

2.3750 / 2.3757

3.0000 / 3.0007

3.7500 / 3.7509

4.5000 / 4.5009

6.0000 / 6.0010

46

51

115

174

194

221

353

491

860

1058

1654

3173

60

71

176

266

308

353

617

905

1787

2250

3600

7830

3

4

4

4

5

6

6

6

6

6

6

6

(Figure 3)

L


Standard linear Bushings, 0752-Adjustable type - for use on unsupported shaft

Structural design

• Adjustable radial clearance• Hardened and ground outer sleeve• Low noise, lightweight resin ball

retainer*• Balls made of high quality anti- friction bearing steel• With or without integral seals

Rexroth Standard Adjustable Linear Bushing

NominalShaftDiameter (inches) without seals with two seals

Part NumbersMass

(lb)

Ordering Data

(Table 13)

Consult factory for details and availability:Single seal versions R0752 1.. ..Corrosion resistant series R0752 .. 53

* Sizes available with steel ball cage only**Commercial series XR-rings with end lugs


0.5000

0.6250

0.7500

1.0000

1.2500

1.5000

2.0000

2.5000

3.0000

4.0000

R0752 008 00

R0752 010 00

R0752 012 00

R0752 016 00

R0752 020 00

R0752 024 00

R0752 032 00

*R0752 040 15

*R0752 048 15

*R0752 064 15

R0752 208 00

R0752 210 00

R0752 212 00

R0752 216 00

R0752 220 00

R0752 224 00

R0752 232 00

*R0752 240 15

*R0752 248 15

*R0752 264 15

0.09

0.18

0.22

0.45

0.96

1.47

2.48

5.64

9.59

22.38


R987 145 917 XR-8A

R987 145 918 XR-10A

R987 145 910 XR-12A

R987 145 911 XR-16A

R987 145 919 XR-20A

R987 145 912 XR-24A

R987 145 913 XR-32A






Dimensions and Specifi cations

(Table 14)

Bore

d

D(1) CL(2) C1 C2 D1

Dimensions (inches)

E

NominalShaftDiameter

RecommendedHousing

Bore (3)

Load Capacity (4)

dyn. stat.

C (lbf) Co (lbf)

No. ofBallCircuits

Specifi cations

(Table 15)

Notes:

(1) Outer diameter tolerance see ISO table, page 15


Ø 0.2500- 0.7500 + 0/ -0.008’’Ø 1.0000 - 2.5000 + 0/ -0.012’’Ø 3.0000 - 4.0000 + 0/ -0.016’’

(3) Transition fi t

(4) See table 2 -page 7 for load correction factors

.5000/.4996

.6250/.6246

.7500/.7496

1.0000/.9996

1.2500/1.2495

1.5000/1.4995

2.0000/1.9995

2.5000/2.4994

3.0000/2.9994

4.0000/3.9992

0.8750

1.1250

1.2500

1.5625

2.0000

2.3750

3.0000

3.7500

4.5000

6.0000

1.2500

1.5000

1.6250

2.2500

2.6250

3.0000

4.0000

5.0000

6.0000

8.0000

0.9625

1.1039

1.1657

1.7547

2.0047

2.4118

3.1917

3.9760

4.7260

6.2580

0.0459

0.0559

0.0559

0.0679

0.0679

0.0859

0.1029

0.1200

0.1200

0.1389

0.8209

1.0590

1.1760

1.4687

1.8859

2.2389

2.8379

3.5519

4.3100

5.7450

0.06

0.06

0.06

0.06

0.10

0.12

0.12

0.12

0.12

0.12

0.5000

0.6250

0.7500

1.0000

1.2500

1.5000

2.0000

2.5000

3.0000

4.0000

0.8750 / 0.8755

1.1250 / 1.1255

1.2500 / 1.2506

1.5625 / 1.5631

2.0000 / 2.0007

2.3750 / 2.3757

3.0000 / 3.0007

3.7500 / 3.7509

4.5000 / 4.5009

6.0000 / 6.0010

115

174

194

221

353

491

860

1058

1654

3173

176

266

308

353

617

905

1787

2250

3600

7830

4

4

5

6

6

6

6

6

6

6

(Figure 4)

L


Consult factory for details and availability:Single seal versions R0750 1.. ..Corrosion resistant series R0750 .. 53(0753 not available for 2.5", 3.0" and 4.0")

* Sizes available in steel ball cage only**Commercial series XR-rings with end lugs


Standard Linear Bushing, 0753-Open type - for use on a supported shaft

Structural design

• Hardened and ground outer sleeve• Low noise,lightweight resin ball

retainer* • Balls made of high quality

anti-friction bearing steel• With or without integral seals

NominalShaftDiameter without seals with two seals

Part Numbers Mass (lb)

Ordering Data

(Table 16)

0.5000

0.6250

0.7500

1.0000

1.2500

1.5000

2.0000

2.5000

3.0000

4.0000

R0753 008 00

R0753 010 00

R0753 012 00

R0753 016 00

R0753 020 00

R0753 024 00

R0753 032 00

* R0753 040 15

* R0753 048 15

* R0753 064 15

R0753 208 00

R0753 210 00

R0753 212 00

R0753 216 00

R0753 220 00

R0753 224 00

R0753 232 00

* R0753 240 15

* R0753 248 15

* R0753 264 15

0.07

0.14

0.19

0.42

0.86

1.34

2.47

4.92

8.27

19.27


R987 145 917 XR-8A

R987 145 918 XR-10A

R987 145 910 XR-12A

R987 145 911 XR-16A

R987 145 919 XR-20A

R987 145 912 XR-24A

R987 145 913 XR-32A

n/a

n/a

n/a



(Table 17)

Bore

d

CL(2) C1 C2 D1 E



Load Capacity (4), (5)

dyn. stat.

C (lbf) Co (lbf)

No. ofBallCircuits

Specifi cations

(Table 18)

D(1)

.5000/.4996

.6250/.6246

.7500/.7496

1.0000/.9996

1.2500/1.2495

1.5000/1.4995

2.0000/1.9995

2.5000/2.4994

3.0000/2.9994

4.0000/3.9992

0.8750

1.1250

1.2500

1.5625

2.0000

2.3750

3.0000

3.7500

4.5000

6.0000

1.2500

1.5000

1.6250

2.2500

2.6250

3.0000

4.0000

5.0000

6.0000

8.0000

0.9625

1.1039

1.1657

1.7547

2.0047

2.4118

3.1917

3.9760

4.7260

6.2580

0.0459

0.0559

0.0559

0.0679

0.0679

0.0859

0.1029

0.1200

0.1200

0.1389

0.340

0.375

0.438

0.563

0.625

0.750

1.000

1.250

1.500

2.000

80o

80o

60o

50o

50o

50o

50o

50o

50o

50o

0.8209

1.0590

1.1760

1.4687

1.8859

2.2389

2.8379

3.5519

4.3100

5.7450

0.5000

0.6250

0.7500

1.0000

1.2500

1.5000

2.0000

2.5000

3.0000

4.0000

0.8750 / 0.8755

1.1250 / 1.1255

1.2500 / 1.2506

1.5625 / 1.5631

2.0000 / 2.0007

2.3750 / 2.3757

3.0000 / 3.0007

3.7500 / 3.7509

4.5000 / 4.5009

6.0000 / 6.0010

115

174

194

221

353

491

860

1058

1654

3173

176

266

308

353

617

905

1787

2250

3600

7830

3

3

4

5

5

5

5

5

5

5

(Figure 5)

Notes:

(1) Outer diameter tolerance see ISO table, page 15.


Ø 0.2500- 0.7500 + 0/ -0.008’’Ø 1.0000 - 2.5000 + 0/ -0.012’’Ø 3.0000 - 4.0000 + 0/ -0.016’’

(3) Transition fi t

(4) See table 2 on page 7 for load correction factors(5) 50% derating required when load is

applied through open side.

L


The Super Linear Bushing consists of:

• Ball retainer and outer sleeve made of light weight polyamide

• Hardened steel load plates with ground ball tracks

• Balls made of high quality anti-friction bearing steel

• Adjustable bores (open and closed)• With or without integral seals

Types

• Closed

• Open

Advantages

• Low friction• Low noise, lightweight• Self-aligning to +/-0.5°• Radial clearance adjustable• High load capacities

Temperature Ratings

• Continuous: -4oF to 180oF


Rexroth’s Super Linear Bushings compensate for alignment errors of up to one degree without reduction of load capacity.

The steel load plates are designed with the central portion of the plate slightly larger than the ends. This design serves as a fulcrum point to allow for each load plate to compensate for minor errors in alignment between shaft and housing bore caused by inaccurate machining or shaft defl ection.

Much smoother operation, higher load capacity and substantially longer travel life than conventional Linear Bushings.

Each load plate has a ground surface raceway providing low friction and high load.

With its high load capacity and ability to compensate for inaccurate machi-ne tolerances, the Super Linear Bushing allows for use of smaller compo-nents in the application. Shaft, bushing, and housing can be reduced, thereby saving money and design consideration of all the elements.

The Super Linear Bushing provides up to three times the load capacity and 27 times the travel life of Standard Linear Bushings, due to its special load plate design.

Note: Contact the factory for details on the Rexroth Super Linear Bushing design and rating information

Results

Ground Ball Tracks

Cost-effective Design

Load Capacity and Travel Life


Consult factory for details and availability:Single seal versions R0755 1.. ..


Super Linear Bushing, 0755Closed type - for use on unsupported shaft

Structural design

• Lightweight resin retainer and outer sleeve

• Hardened and ground steel bearing load plates

• Balls made of high quality anti- friction bearing steel• With or without integral seals• Self-aligning to +/-0.5°

NominalShaftDiameter(inches) without seals with two seals

Part Numbers Mass (lb)

0.2500

0.3750

0.5000

0.6250

0.7500

1.0000

1.2500

1.5000

2.0000

R0755 004 00

R0755 006 00

R0755 008 00

R0755 010 00

R0755 012 00

R0755 016 00

R0755 020 00

R0755 024 00

R0755 032-00

R0755 204 00

R0755 206 00

R0755 208 00

R0755 210 00

R0755 212 00

R0755 216 00

R0755 220 00

R0755 224 00

R0755 232 00

0.01

0.01

0.04

0.10

0.12

0.26

0.49

0.75

1.39

(Table 16)


R987 145 915 XR-4A

R987 145 916 XR-6A

R987 145 917 XR-8A

R987 145 918 XR-10A

R987 145 910 XR-12A

R987 145 911 XR-16A

R987 145 919 XR-20A

R987 145 912 XR-24A

R987 145 913 XR-32A



(Figure 6)

Notes:


Ø 0.2500- 0.3750 + 0/ -0.015’’Ø 0.5000- 1.0000 + 0/ -0.020’’Ø 1.2500 + 0/ -0.025’’Ø 1.5000 + 0/ -0.030"Ø 2.0000 + 0/ -0.040"

(2) Transition fi t

(3) See table 2 on page 7 for load correction factors

Bore

d

D CL(1) C1 C2 D1

(Table 20)



Load Capacity (3)

dyn. stat.

C (lbf) Co (lbf)

No. ofBallCircuits

(Table 21)

.2500/.2495

.3750/.3745

.5000/.4995

.6250/.6245

.7500/.7495

1.0000/.9995

1.2500/1.2494

1.5000/1.4994

2.0000/1.9992

0.5000

0.6250

0.8750

1.1250

1.2500

1.5625

2.0000

2.3750

3.0000

0.7500

0.8750

1.2500

1.5000

1.6250

2.2500

2.6250

3.0000

4.0000

0.5150

0.7030

1.0320

1.1120

1.2720

1.8860

2.0110

2.4220

3.2060

0.0390

0.0390

0.0459

0.0559

0.0559

0.0679

0.0679

0.0859

0.1029

0.4687

0.5880

0.8209

1.0590

1.1760

1.4687

1.8859

2.2389

2.8379

0.5000 / 0.5005

0.6250 / 0.6255

0.8750 / 0.8755

1.1250 / 1.1255

1.2500 / 1.2505

1.5625 / 1.5630

2.0000 / 2.0008

2.3750 / 2.3760

3.0000 / 3.0010

60

95

230

400

470

850

1230

1483

2430

80

120

290

502

592

1062

1532

1852

3038

4

4

4

5

6

6

6

6

6

0.2500

0.3750

0.5000

0.6250

0.7500

1.0000

1.2500

1.5000

2.0000

L


Super Linear Bushing, 0756Open type - for use on a supported shaft

Structural design

• Lightweight resin retainer and outer sleeve

• Hardened and ground steel bearing load plates

• Balls made of high quality anti- friction bearing steel

• With or without integral seals• Self-aligning to +/- 0.5°

NominalShaftDiameter(in.) without seals with two seals

Part Numbers Mass(lb)

Ordering Data

(Table 22)

0.5000

0.6250

0.7500

1.0000

1.2500

1.5000

2.0000

R0756 008 00

R0756 010 00

R0756 012 00

R0756 016 00

R0756 020 00

R0756 024 00

R0756 032 00

R0756 208 00

R0756 210 00

R0756 212 00

R0756 216 00

R0756 220 00

R0756 224 00

R0756 232 00

0.03

0.08

0.10

0.22

0.40

0.62

1.15

Consult factory for details and availability:Single seal versions R0756 1.. ..



R987 145 917 XR-8A

R987 145 918 XR-10A

R987 145 910 XR-12A

R987 145 911 XR-16A

R987 145 919 XR-20A

R987 145 912 XR-24A

R987 145 913 XR-32A



(Table 23)

Bore

d

CL(1) C1 C2 D1 ED

NominalShaftDiameter(in.)


Load Capacity (3), (4)

dyn. stat.

C (lbf) Co (lbf)

No. ofBallCircuits

(Table 24)

Nominal Shaft Diameter(in.)

FHoleDia.

J

Depth

(Table 25)

Note: For notes 1, 2, and 3 refer to page 27(4) 50 % derating required when load is applied through open side.

.5000/.4995

.6250/.6245

.7500/.7495

1.0000/.9995

1.2500/1.2494

1.5000/1.4994

2.0000/1.9992

0.8750

1.1250

1.2500

1.5625

2.0000

2.3750

3.0000

1.2500

1.5000

1.6250

2.2500

2.6250

3.0000

4.0000

1.0320

1.1120

1.2720

1.8860

2.0110

2.4220

3.2060

0.0459

0.0559

0.0559

0.0679

0.0679

0.0859

0.1029

0.8209

1.0590

1.1760

1.4687

1.8859

2.2389

2.8379

0.313

0.375

0.438

0.563

0.625

0.750

1.000

0.5000

0.6250

0.7500

1.0000

1.2500

1.5000

2.0000

0.8750 / 0.8755

1.1250 / 1.1255

1.2500 / 1.2505

1.5625 / 1.5630

2.0000 / 2.0008

2.3750 / 2.3760

3.0000 / 3.0010

230

400

470

850

1230

1483

2430

290

502

592

1062

1532

1852

3038

3

4

5

5

5

5

5

0.5000

0.6250

0.7500

1.0000

1.2500

1.5000

2.0000

0.136

0.105

0.136

0.136

0.201

0.201

0.265

(Figure 7)

Thru hole

0.0390

0.0590

0.0470

0.0900

0.0900

Thru hole

L

30o

30o

30o

30o

30o

30o

(Figure 8) (Figure 9) (Figure 10)


Overview

Cast Iron Series

Closed TypeStandard type with fi xed bore and self-aligning spherical sleeve.

Adjustable TypeFor use when zero clearance or preload is required.

Open TypeFor use with long guideways when the shaft is fully supported.

44

46

48

Single Sets Twin Sets

Aluminum Series

Closed TypeStandard type with self-aligning insert used for high load.

Adjustable TypeFor use when zero clearance or pre-load is required.

Open TypeFor use with long guideways when the shaft is fully supported.

Page

32

34

36

38

40

42


Pillow Block Sets provide high rigidity regardless of the direction of load, even when the maximum load carrying capacities are achieved.

The Super Linear Bushing is completely enclosed in the compact housing to protect it against all external impacts. Pre-machined blocks provide accurate bore tolerance for smooth operation.

Mounting holes in the four corners provide rigid mounting to carriage assemblies.

Adjustable versions are available to achieve zero clearance assemblies.

The tables for the Pillow Block Sets contain tolerance values for the height dimension “A”. These tolerance values have been obtained by statistical meth-ods and are representative of the values to be expected in actual practice.

The Cast Iron series consists of three major components:

1) A rigid, high quality, one-piece cast iron block 2) A precision, machined, spherical sleeve 3) A sealed Linear Bushing

All three series, closed, adjustable, and open, are adjusted to proper clear-ances at the factory. In addition, the integral spherical sleeve provides three degrees self-alignment in all directions.

The Super Pillow Bock Sets combine the many benefi ts of the Super Linear Bushing with the simplicity of a rugged, lightweight mounting assembly.

The Super Pillow Block Set consists of:

1) A precision machined aluminum housing with lube ports 2) A sealed Super Linear Bushing

Advantages/Notes for Mounting

High Load Capacity and Rigidity

Compact Block Design & ease of mounting the Aluminum Series

Vertical Dimensions

Cast Iron Pillow Block Sets

Aluminum Pillow Block Sets

Note: Standard Linear Bushings may be used in some of the Aluminum Pillow Block Sets - contact the factory for details.


Cast Iron Pillow Block Set, R1750Closed type - for use on unsupported shaft

Structural design

0.5000

0.7500

1.0000

1.2500

1.5000

2.0000

R1750 208 00

R1750 212 00

R1750 216 00

R1750 220 00

R1750 224 00

R1750 232 00

0.50

1.30

2.10

4.40

5.70

10.50


Part Number

with two seals

Mass(lb)

Ordering Data

• Rigid cast iron block• Self-aligning sleeve• Standard Bushing• Fully sealed both ends

Consult factory for details and availability:No seal versions R0750 0..Corrosion-resistant series R1750 .. 53

(Table 26)


(Table 27)

.5000

.7500

1.0000

1.2500

1.5000

2.0000

0.875

1.125

1.375

1.750

2.000

2.500

2.000

2.750

3.250

4.000

4.750

6.000

1.500

2.000

2.250

2.750

3.000

3.500

1.6250

2.1250

2.5625

3.2500

3.7500

4.7500

1.500

2.000

2.500

3.000

3.500

4.500


B CW D E(2)

1.000

1.375

1.500

1.875

2.000

2.500

F(3)A(1)

1.250

1.625

2.250

2.625

3.000

4.000

G(4) J

0.2500

0.3125

0.3750

0.4375

0.5000

0.6250

K

0.5000

0.6250

1.0000

1.2500

1.4375

1.6250

0.5000

0.7500

1.0000

1.2500

1.5000

2.0000

115

194

221

353

491

860

176

308

353

617

905

1787

4

5

6

6

6

6


Load Capacity

dyn. stat.

C (lbf) Co (lbf)

No. ofBallCircuits

Specifi cations

(Table 28)

HMounting Hole

Bolt Hole

#8

#10

1/4

5/16

5/16

3/8

3/16

7/32

9/32

11/32

11/32

13/32

Notes:

(Figure 11)

BEH

ADJUSTING SCREW

3° SELF-ALIGNINGIN ALL DIRECTIONS

D

A

J

FC

G

K

w


(1) Center line tolerance +/- .005’’(2) Bolt hole location tolerance +/- .010’’(3) Bolt hole location tolerance +/- .010’’(4) Bushing insert length tolerance Reference note 2 - page 19


Cast Iron Pillow Block Set, R1752Adjustable type - for use on unsupported shaft

Structural design

Rexroth Linear Pillow Block Sets

0.5000

0.7500

1.0000

1.2500

1.5000

2.0000

R1752 208 00

R1752 212 00

R1752 216 00

R1752 220 00

R1752 224 00

R1752 232 00

0.50

1.30

2.10

4.40

5.70

10.50


Part Number

with two seals

Mass(lb)

Ordering Data

• Rigid cast iron block• Self-aligning sleeve• Standard Bushing• Fully sealed both ends• Adjustable bore


(Table 29)


0.5000

0.7500

1.0000

1.2500

1.5000

2.0000

115

194

221

353

491

860

176

308

353

617

905

1787

4

5

6

6

6

6


Load Capacity

dyn. stat.

C (lbf) Co (lbf)

No. ofcircuits

Specifi cations

(Table 31)

HMounting Hole

Bolt Hole

#8

#10

1/4

5/16

5/16

3/8

3/16

7/32

9/32

11/32

11/32

13/32

Notes:

(1) Center line tolerance +/- .005’’(2) Bolt hole location tolerance +/- .010’’(3) Bolt hole location tolerance +/- .010’’(4) Bushing insert length tolerance Reference note 2 - page 19

(Table 30)

.5000

.7500

1.0000

1.2500

1.5000

2.0000

0.875

1.125

1.375

1.750

2.000

2.500

2.000

2.750

3.250

4.000

4.750

6.000

1.500

2.000

2.250

2.750

3.000

3.500

1.6250

2.1250

2.5625

3.2500

3.7500

4.7500

1.500

2.000

2.500

3.000

3.500

4.500


B CW D E(2)

Dimensions (inches)

1.000

1.375

1.500

1.875

2.000

2.500

F(3)A(1)

1.250

1.625

2.250

2.625

3.000

4.000

G(4) J

0.2500

0.3125

0.3750

0.4375

0.5000

0.6250

K

0.5000

0.6250

1.0000

1.2500

1.4375

1.6250

(Figure 12)

BEH

ADJUSTING SCREW


D

A

J

FC

G

K

w



Cast Iron Pillow Block Set, R1753Open type - for use on supported shaft

Structural design

0.5000

0.7500

1.0000

1.5000

2.0000

R1753 208 00

R1753 212 00

R1753 216 00

R1753 224 00

R1753 232 00

0.50

1.30

2.10

5.70

10.50


Part Number

with two seals

Mass(lb)

Ordering Data

(Table 32)

• Rigid cast iron block• Self-aligning sleeve• Standard Bushing• Fully sealed both ends• Adjustable open bore



Notes:

(1) Center line tolerance +/- .005’’(2) Bolt hole location tolerance +/- .010’’(3) Bolt hole location tolerance +/- .010’’(4) Bushing insert length tolerance Reference note 2 - page 19(5) 50% derating required when load is

applied through open side.

(Table 33)

.5000

.7500

1.0000

1.2500

1.5000

2.0000

0.875

1.125

1.375

1.750

2.000

2.500

2.000

2.750

3.250

4.000

4.750

6.000

1.500

2.000

2.250

2.750

3.000

3.500

1.5938

2.0938

2.5313

3.2188

3.7188

4.6563

1.500

2.000

2.500

3.000

3.500

4.500


B CW D E(2)

Dimensions (inches)

1.000

1.375

1.500

1.875

2.000

2.500

F(3)A(1)

1.250

1.625

2.250

2.625

3.000

4.000

G(4) J

0.2500

0.3125

0.3750

0.4375

0.5000

0.6250

K

0.3125

0.4375

0.5625

0.6250

0.7500

1.0000

0.5000

0.7500

1.0000

1.2500

1.5000

2.0000

115

194

221

353

491

860

176

308

353

617

905

1787

3

4

5

5

5

5


Load Capacity (5)

dyn. stat.

C (lbf) Co (lbf)

No. ofcircuits

(Table 34)

H

Mounting Hole

Bolt Hole

#8

#10

1/4

5/16

5/16

3/8

3/16

7/32

9/32

11/32

11/32

13/32

15/32

19/32

15/16

1 5/32

1 5/16

1 1/2

L

BEH

ADJUSTING SCREW


D

A

J

FC

G

L

w


(Figure 13)


Aluminum Pillow Block Set, R1755Closed type - for use on unsupported shaft

Structural design

• Precision, lightweight aluminum housing

• Super Linear Bushing• Self-aligning feature• Fully sealed both ends• Access for lubrication

0.2500

0.3750

0.5000

0.6250

0.7500

1.0000

1.2500

1.5000

2.0000

R1755 704 00

R1755 706 00

R1755 708 00

R1755 710 00

R1755 712 00

R1755 716 00

R1755 720 00

R1755 724 00

R1755 732 00

0.09

0.12

0.24

0.47

0.57

1.18

2.40

3.50

6.90


Part Number

with two seals

Mass(lb)

Ordering Data

(Table 35)

Consult factory for details and availability:No seal versions R0755 0..



Notes:

(1) Center line tolerance +/- .0012’’(2) Bolt hole location tolerance +/- .010’’(3) Bolt hole location tolerance +/- .010’’

* Provided with push-in lube fi tting for sizes .2500’’ to .5000’’.

Sizes .6250’’ to 2’’ offer a 1/4 - 28 tapped hole with plug.

(Table 36)

0.2500

0.3750

0.5000

0.6250

0.7500

1.0000

1.2500

1.5000

2.0000

0.4370

0.5000

0.6870

0.8750

0.9370

1.1870

1.5000

1.7500

2.1250

1.625

1.750

2.000

2.500

2.750

3.250

4.000

4.750

6.000

1.188

1.313

1.688

1.938

2.063

2.813

3.625

4.000

5.000

0.813

0.938

1.250

1.625

1.750

2.188

2.813

3.250

4.063

1.312

1.437

1.688

2.125

2.375

2.875

3.500

4.125

5.250


B CL D E(2)

0.750

0.875

1.000

1.125

1.250

1.750

2.000

2.500

3.250

F(3)A(1)

1.000

1.125

1.375

1.750

1.875

2.375

3.000

3.500

4.500

G J

0.188

0.188

0.250

0.281

0.313

0.375

0.438

0.500

0.625

K

0.750

0.875

1.125

1.437

1.563

1.938

2.500

2.875

3.625

0.2500

0.3750

0.5000

0.6250

0.7500

1.0000

1.2500

1.5000

2.0000

60

95

230

400

470

850

1230

1483

2430

4

4

4

5

6

6

6

6

6


Load Capacity

dyn. stat.

C (lbf) Co (lbf)

No. ofBallCircuits

(Table 37)

H

Mounting Hole

Bolt Hole

#6

#6

#6

#8

#8

#10

#10

1/4

3/8

5/32

5/32

5/32

3/16

3/16

7/32

7/32

9/32

13/32

0.394

0.433

0.591

0.709

0.717

0.969

1.311

1.378

1.654

L

80

120

290

502

592

1062

1532

1852

3038

(Figure 14)

BE

H

LUBRICATION PORT*

DA

J

FC

G

K

+/- 0.5° SELF-ALIGNINGIN ALL DIRECTIONS

L


Aluminum Pillow Block Set, R1756Adjustable type - for use on unsupported shaft

Structural design


• Super Linear Bushing• Self-aligning feature• Fully sealed both ends• Adjustable bore• Access for lubrication


0.2500

0.3750

0.5000

0.6250

0.7500

1.0000

1.2500

1.5000

2.0000

R1756 704 00

R1756 706 00

R1756 708 00

R1756 710 00

R1756 712 00

R1756 716 00

R1756 720 00

R1756 724 00

R1756 732 00

0.09

0.12

0.24

0.47

0.57

1.18

2.40

3.50

6.90


Part Numbers

with two seals

Mass(lb)

Ordering Data

(Table 38)

Consult factory for details and availability: No seal versions R1756 0..



Notes:


* Provided with push-in lube fi tting for sizes .2500’’ to .5000’’. Sizes .6250’’ to 2’’ offer a 1/4 - 28

tapped hole with plug.

(Table 39)

0.2500

0.3750

0.5000

0.6250

0.7500

1.0000

1.2500

1.5000

2.0000

0.4370

0.5000

0.6870

0.8750

0.9370

1.1870

1.5000

1.7500

2.1250

1.625

1.750

2.000

2.500

2.750

3.250

4.000

4.750

6.000

1.188

1.313

1.688

1.938

2.063

2.813

3.625

4.000

5.000

0.813

0.938

1.250

1.625

1.750

2.188

2.813

3.250

4.063

1.312

1.437

1.688

2.125

2.375

2.875

3.500

4.125

5.250


B CL D E(2)

Dimensions (inches)

0.750

0.875

1.000

1.125

1.250

1.750

2.000

2.500

3.250

F(3)A(1)

1.000

1.125

1.375

1.750

1.875

2.375

3.000

3.500

4.500

G J

0.188

0.188

0.250

0.281

0.313

0.375

0.438

0.500

0.625

K

0.750

0.875

1.125

1.437

1.563

1.938

2.500

2.875

3.625

0.2500

0.3750

0.5000

0.6250

0.7500

1.0000

1.2500

1.5000

2.0000

60

95

230

400

470

850

1230

1483

2430

4

4

4

5

6

6

6

6

6


Load Capacity

dyn. stat.

C (lbf) Co (lbf)

No. ofBallCircuits

Specifi cations

(Table 40)

H

Mounting Hole

Bolt Hole

#6

#6

#6

#8

#8

#10

#10

1/4

3/8

5/32

5/32

5/32

3/16

3/16

7/32

7/32

9/32

13/32

0.394

0.433

0.591

0.709

0.717

0.969

1.311

1.378

1.654

L

80

120

290

502

592

1062

1532

1852

3038

(Figure 15)

BE

H

D

A

FC

G

K

J

LUBRICATION PORT*

L



Aluminum Pillow Block Set, R1757Open type - for use on supported shaft

Structural design


• Super Linear Bushing• Self-aligning feature• Fully sealed both ends• Adjustable open bore• Access for lubrication


Ordering Data


0.5000

0.6250

0.7500

1.0000

1.2500

1.5000

2.0000

R1757-708 00

R1757 710 00

R1757 712 00

R1757 716 00

R1757 720 00

R1757 724 00

R1757 732 00

0.19

0.37

0.50

1.07

2.04

3.07

5.92


Part Number

with two seals

Mass(lb)

(Table 41)


0.5000

0.6250

0.7500

1.0000

1.2500

1.5000

2.0000

230

400

470

850

1230

1483

2430

290

502

592

1062

1532

1852

3038

3

4

5

5

5

5

5


Load Capacity

dyn. stat.

C (lbf) Co (lbf)

No. ofBallCircuits

Specifi cations

(Table 43)

H

Mounting Hole

Bolt Hole

#6

#8

#8

#10

#10

1/4

3/8

5/32

3/16

3/16

7/32

7/32

9/32

13/32

0.980

1.070

1.150

1.750

2.180

2.500

3.150

L

(Table 42)

0.5000

0.6250

0.7500

1.0000

1.2500

1.5000

2.0000

0.6870

0.8750

0.9370

1.1870

1.5000

1.7500

2.1250

2.000

2.500

2.750

3.250

4.000

4.750

6.000

1.500

1.750

1.875

2.625

3.375

3.750

4.750

1.100

1.405

1.535

1.975

2.485

2.910

3.660

1.688

2.125

2.375

2.875

3.500

4.125

5.250


B CL D E(2)

1.000

1.125

1.250

1.750

2.000

2.500

3.250

F(3)A(1)

0.688

0.875

0.937

1.188

1.500

1.750

2.250

G J

0.250

0.281

0.315

0.375

0.437

0.500

0.625

K

0.905

1.095

1.161

1.457

1.831

2.087

2.638

0.260

0.319

0.386

0.512

0.569

0.681

0.933

h

Notes:


* Provided with push-in lube fi tting for size .5000’’. Sizes .6250’’ to 2.000’’ offer

a 1/4 - 28 tapped hole with plug.


(Figure 16)

Dimensions (inches)

BE

H

DA

FC

G

J

K

h30°

LUBRICATION PORT*

L



Aluminum Twin Pillow Block Set, R1760Closed type - for use on unsupported shaft

Structural design

• Precision, lightweight aluminum housing• Twin style housing• Two Super Linear Bushings• Self-aligning feature• Fully sealed both ends• Access for lubrication

Rexroth Linear Twin Pillow Block Sets

0.2500

0.3750

0.5000

0.6250

0.7500

1.0000

1.2500

1.5000

R1760 704 00

R1760 706 00

R1760 708 00

R1760 710 00

R1760 712 00

R1760 716 00

R1760 720 00

R1760 724 00

0.19

0.24

0.49

0.96

1.25

2.50

5.00

7.80


Part Number

with two seals

Mass(lb)

Ordering Data

(Table 44)




Notes:


* Provided with push-in lube fi tting for sizes .2500’’ to .5000’’. Sizes .6250’’ to 1.500’’ offer a 1/4 - 28 tapped hole with plug.

(Table 45)

0.2500

0.3750

0.5000

0.6250

0.7500

1.0000

1.2500

1.5000

0.4370

0.5000

0.6870

0.8750

0.9370

1.1870

1.5000

1.7500

1.625

1.750

2.000

2.500

2.750

3.250

4.000

4.750

2.500

2.750

3.500

4.000

4.500

6.000

7.500

9.000

0.813

0.938

1.250

1.625

1.750

2.188

2.813

3.250

1.312

1.437

1.688

2.125

2.375

2.875

3.500

4.125


B CL E(2)

Dimensions (inches)

2.000

2.250

2.500

3.000

3.500

4.500

5.500

6.500

F(3)A(1)

1.000

1.125

1.375

1.750

1.875

2.375

3.000

3.500

G J

0.188

0.188

0.250

0.281

0.313

0.375

0.438

0.500

K

0.750

0.875

1.125

1.437

1.563

1.938

2.500

2.875

0.2500

0.3750

0.5000

0.6250

0.7500

1.0000

1.2500

1.5000

96

150

370

640

750

1360

1925

2360

160

240

580

1000

1184

2124

3064

3685

8

8

8

10

12

12

12

12


Load Capacity

dyn. stat.

C (lbf) Co (lbf)

No. ofBallCircuits

Specifi cations

(Table 46)

H

Mounting Hole

Bolt Hole

#6

#6

#6

#8

#8

#10

#10

1/4

5/32

5/32

5/32

3/16

3/16

7/32

7/32

9/32

D

(Figure 17)

BE H

D

A

FC

G

J

K

LUBRICATION PORT*

L


Aluminum Twin Pillow Block Set, R1762Adjustable type - for use on

unsupported shaft

Structural design


• Twin style housing• Two Super Linear Bushings• Self-aligning feature• Fully sealed both ends• Adjustable bore• Access for lubrication


0.2500

0.3750

0.5000

0.6250

0.7500

1.0000

1.2500

1.5000

R1762 704 00

R1762 706 00

R1762 708 00

R1762 710 00

R1762 712 00

R1762 716 00

R1762 720 00

R1762 724 00

0.19

0.25

0.50

0.96

1.25

2.50

5.00

7.80


Part Number

with two seals

Mass(lb)

Ordering Data

(Table 47)




Notes:


* Provided with push-in lube fitting for sizes .2500’’ to .5000’’.

Sizes .6250’’ to 1.500’’ offer a 1/4 - 28 tapped hole with plug.

0.2500

0.3750

0.5000

0.6250

0.7500

1.0000

1.2500

1.5000

96

150

370

640

750

1360

1925

2360

160

240

580

1000

1184

2124

3064

3685

8

8

8

10

12

12

12

12


Load Capacity

dyn. stat.

C (lbf) Co (lbf)

No. ofBallCircuits

Specifi cations

(Table 49)

H

Mounting Hole

Bolt Hole

#6

#6

#6

#8

#8

#10

#10

1/4

5/32

5/32

5/32

3/16

3/16

7/32

7/32

9/32

(Table 48)

0.2500

0.3750

0.5000

0.6250

0.7500

1.0000

1.2500

1.5000

0.4370

0.5000

0.6870

0.8750

0.9370

1.1870

1.5000

1.7500

1.625

1.750

2.000

2.500

2.750

3.250

4.000

4.750

2.500

2.750

3.500

4.000

4.500

6.000

7.500

9.000

0.813

0.938

1.250

1.625

1.750

2.188

2.813

3.250

1.312

1.437

1.688

2.125

2.375

2.875

3.500

4.125


B CL D E(2)

Dimensions (inches)

2.000

2.250

2.500

3.000

3.500

4.500

5.500

6.500

F(3)A(1)

1.000

1.125

1.375

1.750

1.875

2.375

3.000

3.500

G J

0.188

0.188

0.250

0.281

0.313

0.375

0.438

0.500

K

0.750

0.875

1.125

1.437

1.563

1.938

2.500

2.875

(Figure 18)

B

EH

D

A

FC

G

J

K

LUBRICATION PORT*

L


Aluminum Twin Pillow Block Set, R1763Open type - for use on supported shaft

Structural design

• Precision, lightweight aluminum housing• Twin style housing• Two Super Linear Bushings• Self-aligning feature• Fully sealed both ends• Adjustable open bore• Access for lubrication


0.5000

0.6250

0.7500

1.0000

1.2500

1.5000

R1763 708 00

R1763 710 00

R1763 712 00

R1763 716 00

R1763 720 00

R1763 724 00

0.40

0.80

1.00

2.00

4.20

6.70


Part Number

with two seals

Mass(lb)

(Table 50)


Ordering Data



0.5000

0.6250

0.7500

1.0000

1.2500

1.5000

370

640

750

1360

1924

2360

580

1000

1184

2124

3064

3685

6

8

10

10

10

10


No. ofBall

circuits

Specifi cations

(Table 52)

H

Mounting Hole

Bolt Hole

#6

#8

#8

#10

#10

1/4

5/32

3/16

3/16

7/32

7/32

9/32

(Table 51)

0.5000

0.6250

0.7500

1.0000

1.2500

1.5000

0.6870

0.8750

0.9370

1.1870

1.5000

1.7500

2.000

2.500

2.750

3.250

4.000

4.750

3.500

4.000

4.500

6.000

7.500

9.000

1.100

1.405

1.535

1.975

2.485

2.910

1.688

2.125

2.375

2.875

3.500

4.125


B CL D E(2)

Dimensions (inches)

2.500

3.000

3.500

4.500

5.500

6.500

F(3)A(1)

0.688

0.875

0.937

1.188

1.500

1.750

G J

0.250

0.281

0.315

0.375

0.437

0.500

K

0.905

1.095

1.161

1.457

1.831

2.087

0.260

0.319

0.386

0.512

0.569

0.681

h

Notes:


* Provided with push-in lube fi tting for sizes .5000’’. Sizes .6250’’ to 1.500’’ offer a 1/4 - 28 tapped hole with plug.

Load Capacity

dyn. stat.

C (lbf) Co (lbf)

(Figure 19)

B

E H

DA

FC

G

J

K

LUBRICATION PORT*

L


Precision Shafts R1700 ..Case hardened polished and ground shaft.. Carbon or stainless material used in end supported Linear Assemblies.

Predrilled ShaftsR1771 ..Case hardened polished and ground shaft. Carbon or stainless material. Pre-drilled radial taps provide mounting capability when used with shaft support rails.

Shaft Support Rail AssembliesR1769 ../ R1770 ..

Combination of predrilled shaft mounted to predrilled shaft support rails. Avail-able with carbon or stainless shaft and aluminum shaft support rails. Continuous support to shaft over length of assembly.

Rexroth Precision Steel Shafts

Page

55

62

65

Shaft Products - Overview


• Guide rods

• Control rods

• Rollers

• Pistons

• Axles

• Guide pins

• Tie rods

• Spindles

• Guide columns

• Mandrels and other similar applications

• Diameter range between 1/4’’ to 4’’ nominal diameter

• Class L O.D. tolerances

• Carbon steel and stainless steel materials

• Random lengths up to 244’’ long

• Plain and predrilled shaft material

• Case hardened to Rc60-64

Precision ShaftA critical component of the Linear Bushings Assembly is the shaft. Consideration for proper surface fi nish, hardness, and diameter is essential for performance of the assembly.

Rexroth Precision Steel Shafts are induction hardened and centerless ground to ensure quality fi t and performance, complimenting the Linear Bushing line of Rexroth products.

In addition to the shaft acting as guideways with Linear Bushings, they also have a long and successful service in the following applications:

Precision Shafts offer the following features


(Table 59)

(Table 60)

Technical Data

Dimensional accuracy and tolerance zones

The diameters of inch Precision Steel Shafts are accurate to within the tole-rance zones of Classes L. Details on the dimensional accuracy of these shafts are compiled in the table on the right.

The tolerance for the diameter of soft-annealed shaft sections may be greater than the tolerance zones quoted.

For special diameter tolerances, please contact the factory.

Straightness

Because of the length of the shafts, it would be uneconomical to use the straightness measurement method specifi ed in DIN ISO 1101 section 14.1. Instead of direct measurement for straightness, the shafts are tested for run out tolerance as described in DIN ISO 1101 section 14.13.1. See “Measurement of straightness”.

Shaft Ø d Class L

(Inch) (mm) (Inch) (mm)

1/4 6.35 –0.0005 –0.013 –0.0010 –0.025

3/8 9.525 –0.0005 –0.013 –0.0010 –0.025

1/2 12.70 –0.0005 –0.013 –0.0010 –0.025

5/8 15.875 –0.0005 –0.013 –0.0010 –0.025

3/4 19.05 –0.0005 –0.013 –0.0010 –0.025

1 25.40 –0.0005 –0.013 –0.0010 –0.025

11/4 31.75 –0.0005 –0.013 –0.0010 –0.025

11/2 38.1 –0.0006 –0.015 –0.0011 –0.028

2 50.8 –0.0006 –0.015 –0.0013 –0.033

3 76.2 –0.008 –0.020 –0.0017 –0.043

4 101.6 –0.0012 –0.030 –0.0024 –0.061

1) Dial gauge reading during straightness measurement. For lengths of less than 303 ft., the lowest possible value is .0015in. This corresponds to a straightness tolerance of .0008 in.2) Applies to shafts made of heat-treatable or anti-friction bearing steel only. Please contact us for surface fi nish and surface roughness (RA) tolerances for corrosion-resistant steel shafts.

Tolerances for inch-size steel shafts

Nominal diameter (in) over 0 1/4 3/8 5/8 1 2 3

up to 1/4 3/8 5/8 1 2 3 4

Roundness L (in) .00025 .00015 .00020 .00024 .00028 .00032 .00039

Taper, L (in) .00020 .00024 .00032 .00035 .00043 .00051 .00059

Straightness (in/ft) .0015 .0015 .0015 .0015 .0015 .0015 .0015

Measured value t11) (in/ft) .0047 .0047 .0047 .0047 .0047 .0047 .0047

Surface roughness maximum (RA)2) (μin) 13 13 13 13 13 13 13


112/458 MADE IN ENGLAND

THE RANK ORGANISATION, RANK TAYLOR HOBSON DIVISION

SPECIMEN

TALYRONDμ

MAGN FILTER

112/458 MADE IN ENGLAND

THE RANK ORGANISATION, RANK TAYLOR HOBSON DIVISION

SPECIMEN

TALYRONDμ

MAG N FILTER

58o2 58o3

Raw shaft Precision Steel Shaft

Measurement of straightness

Measurements are performed at points equidistant between the support points and the overhanging ends of the shaft. The measured values are then halved and the resulting value t1 gives the straightness.

Measurement of roundness

The fi gure shows the roundness of a raw shaft compared with that of a fi nished Precision Steel Shaft.

Shaft hardness

The surface of the shaft is induction-hardened to a depth of at least 0.015 up to 0.125 inches, depending on the shaft diameter. Surface hardness and depth of hardness are extremely uniform, both in the axial and in the circumferential direc-tion. This is the reason for the excellent dimensional consistency and the long service life of Precision Steel Shafts.

The photographs opposite show a longi-tudinal and a transverse section through a hardened and ground Precision Steel Shaft. The hardened surface zone has been made visible by caustic etching.

Shaft Ø d (in) over 3/8 5/8 1 2

up to 3/8 5/8 1 2 4

Depth of hardness1 (in) min. 0.019 0.027 0.043 0.059 0.086

1 Please contact us to obtain the depth of hardness for corrosion-resistant steel shafts.

(Table 61)

AB

A B

AB AB

0.3LL

0.4L 0.3L

t1 t1 t1


Rexroth Precision Steel Shafts59o1

Minimum hardness Solid and tubular shafts HRC 60 Corrosion-resistant steel shafts HRC 53 to DIN 17230 / EN 10088The fi gure opposite shows the micro-structure in the surface zone of a shaft cross section (magnifi cation approx. 10x). The hardened outer layer of mar tensite and the smooth transition to the tough inner core structure are clearly visible.

Induction-hardened surface zoneStructure: martensite hardness • HRC 60 (Rockwell C)

Transitional structure:martensitetroostitepearlite

Core structure:pearlite and ferrite

When steel shafts are used as linear motion guideways for linear bushings it is important that the shaft defl ection occurring under load is kept within certain limits, as otherwise the proper functioning and the service life of the assembly could be impaired1). To facilitate the determination of shaft defl ection by calculation, we have compiled the most common load cases together with the associated defl ection equations in the table below. The equations for calculation of the inclination of the shaft in the linear bushing (tan can also be taken from this table).

1) There will be no loss of load-carrying capacity or service life in Super Linear Bushings provided the shaft defl ection does not exceed 0.5° (tan 0.5° = 0.0087).

Case Loading conditions Defl ection equation Shaft inclination No. in linear bushings

1

2

3

4

5

(Table 62)

Shaft defl ection

Technical Data


The tables below give the values for the maximum permissible shaft inclination (tan max) for each size of Standard Linear Bushing.At tan = tan max the permissible static load capacity is approx. 0.4 CO.

Shaft

Ø d tan max

(in.)

1/4 12.3 · 10–4

3/8 10.0 · 10–4

1/2 10.1 · 10–4

5/8 8.5 · 10–4

3/4 8.5 · 10–4

1 7.2 · 10–4

Shaft

Ø d tan max

(in.)

1 1/4 6.4 · 10–4

1 1/2 7.3 · 10–4

2 6.3 · 10–4

3 5.7 · 10–4

4 5.7 · 10–4

(Table 63)

(Table 64)

(Table 65)


Machining

Examples of standard shaft machining services available are illustrated below. Many custom features can also be provided. A print or sketch must be provided to Bosch Rexroth indicating all dimensions, toler-ances and the quantity required.

When no tolerances are specifi ed. Bosch Rexroth will apply the following standard tolerances based upon the range of precision indicated by the blueprint.


Example

Blueprint Dimensions Tolerance

.XXX -three place decimal +/- .005’’

.XX -two place decimal +/- .010’’

.X -one place decimal +/- .020’’

Standard Machining Options: Standard Machining Options

Rexroth Tolerance

Three-place decimal +0.005"Two-place decimal +0.010"One-place decimal +0.020"

Flat Keyway

Tapped Hotel

Coaxial Hole Retaining Ring Groove

Radial Hole Threaded End

Reduced End


Series R1700 0XX Precision Steel Shaft Specifi cations

(1)Stainless Steel Shaft: For Stainless Steel Shaft Class L use suffi x -28. For plated, use suffi x - 68

Order Example:Part Number ---- R1700 004 08,48’’material ---- Standard carbon steeldiameter ---- 1/4’’ nominalTolerance ---- Class L diameterLength ---- 48’’ long

1/4

3/8

1/2

5/8

3/4

1

1 1/4

1 1/2

2

2 1/2

3

4

R1700 004 08

R1700 006 08

R1700 008 08

R1700 010 08

R1700 012 08

R1700 016 08

R1700 020 08

R1700 024 08

R1700 032 08

R1700 040 08

R1700 048 08

R1700 064 08

.2495/.2490

.3745/.3740

.4995/.4990

.6245/.6240

.7495/.7490

.9995/.9990

1.2495/1.2490

1.4994/1.4989

1.9994/1.9987

2.4993/2.4985

2.9992/2.9983

3.9988/3.9976

0.014

0.031

0.056

0.087

0.125

0.223

0.348

0.501

0.890

1.391

2.003

3.560

244’’

244’’

244’’

244’’

244’’

244’’

244’’

244’’

244’’

244’’

208’’

208’’

0.019

0.027

0.031

0.043

0.047

0.059

0.059

0.062

0.086

0.086

0.086

0.110

Nominal ShaftDiameter(in.)

Part Numbers(1) Class L -08

Actual Diameter

Class L Weight lb/in

*RandomLength(Avg.)

CaseDepth(min.)

(Table 66) *Consult Bosch Rexroth for details on longer lengths

--Ck55 or C55 carbon steel (similar to AISI C-1055), case hardened to min. Rc60 to 64Case depth shown in table 66.--X46Cr13 stainless steel (similar to AISI 420C), case hardened to min. Rc53.Case depth shown in table 66.

8 to 13 RA microinches

+/- 1/32’’ for shafts up to 1.25’’ in diameter+/- 1/16’’ for shafts up to 1.5’’ in diameter and over* closer tolerances are available at additional costs

.0015’’ per foot

Shaft ends are chamfered approximately 1/32’’ X 45o up to 1.25’’ diameter shaft and 1/16’’ X 45o to 1.5’’ diameter and up. Other chamfers can be provided at additional costs.

Materials:

Surface fi nish:

Length tolerances:

Straightness tolerance:

End Conditions:

Shaft Selection Table


Order Example:Part Number ---- R1771 012 08,144’’material----Standard carbon steeldiameter----3/4’’ nominalTolerance----Class L diameterLength----144’’ long


1/2

5/8

3/4

1

1 1/4

1 1/2

2

2.00

2.00

3.00

3.00

3.00

4.00

4.00

4.00

4.00

6.00

6.00

6.00

8.00

8.00

200”

200”

200”

200’’

200’’

200’’

200’’

#6-32

#8-32

#10-32

1/4-20

5/16-18

3/8-16

1/2-13

0.250

0.320

0.380

0.500

0.630

0.750

1.000


Part Numbers(1)Carbon Steel Ck-55 Stainless Steel X46 Class L Class L

A+/- 0.005

B+/- 0.010

CTSize

DDepth

*Random Lengths (Avg.)

(Table 67)

Shaft Selection Table

Series R1771 0XX Pre-drilled Shaft Specifi cations

R1771 008 08 R1771 008 28

R1771 010 08 R1771 010 28

R1771 012 08 R1771 012 28

R1771 016 08 R1771 016 28

R1771 020 08 R1771 020 28

R1771 024 08 R1771 024 28

R1771 032 08 R1771 032 28

(Figure 23)

(Old Series 1700 5..)

*Consult Bosch Rexroth for details on longer lengths

Thread size CT

Effective thread length D

B ref.B typ.A

Ck-55 carbon steel (similar to AISI C-1055), case hardened to Rc60 to 64X 46 Cr13 stainless steel (similar to AISI 420C), case hardened to Rc53 to 57.

8 to 13 RA microinches

+/- 1/32’’ for shafts up to 1.25’’ in diameter+/- 1/16’’ for shafts up to 1.5’’ in diameter and over

.0015’’ per foot

.

Materials:

Surface fi nish:

Length tolerances:

Straightness tolerance:


High Profi le AssemblyR1769 0..Flange style shaft support rail available plain or predrilled. Provides supportto shaft assemblies where defl ection is a concern.

Low Profi le AssemblyR1770 0..Low profi le shaft support rail available in plain or predrilled. Provide a rigid support and a lower center of gravity for shaft assemblies.

Rexroth Shaft Support Rail Assemblies

Page

60

61

Shaft Support Rail Assemblies - Overview

Shaft support assemblies are designed to provide a rigid structure and eliminate shafts bending under load. The Rexroth Shaft Support Rail Assemblies are delivered in ready mount from sections.

The basic design consists of Rexroth Precision Shaft and Support Rails. Various shaft diameters and materials are

available for whatever design requirements are necessary.

Advantages

• Prevent shaft defl ection • Ensure effi cient running of linear motion assemblies • Eliminate the need for time consuming and costly designs

Continuous support of the shaft is possible by assembling individual supports end to end underneath the corres-ponding shaft. This ensures complete and uninterrupted support along the entire assembly.

Support assemblies are sized 1/2’’ nominal shaft diameter to 2’’ nominal shaft diameter in standard lengths up to 200’’ long.

Other lengths and modifi cations may be made to the shaft/rail assemblies at additional costs. A print or sketch is required for quotation.


Series R1769 0XX High Profi le Support Rail Assembly

Specifi cations: Materials: Support rails: 6061-T6 aluminum Shaft: Ck-55 carbon steel / X46 Cr13 stainless steel Surface Finish: Support rail: Aluminum mill fi nish Shaft: 8 to 13 RA microinc Base hole location: +/- .015’’ non-cummulative

Order Example:Part Number ---- R1769 016 08,120’’material----Standard carbon steeldiameter----1’’ nominal class LSupport Rail mounted to shaftLength----120’’ long

(Old Series 1700-6)

(Figure 24)

R1769 008 08

R1769 010 08

R1769 012 08

R1769 016 08

R1769 020 08

R1769 024 08

R1769 032 08

1.125

1.125

1.500

1.750

2.125

2.500

3.250

1.50

1.62

1.75

2.12

2.50

3.00

3.72

0.25

0.31

0.38

0.50

0.56

0.69

0.88

0.19

0.25

0.25

0.25

0.31

0.38

0.50

Nominal ShaftDiameter

Shaft Rail AssemblyPart Number(1)

Carbon Steel Ck-55Class L

B CW

Support Rail Assembly Selection TableD

1.000

1.125

1.250

1.500

1.875

2.250

2.750

0.19

0.25

0.31

0.25

0.31

0.31

0.38

E Part Number for Rail Support(2)

A

+/-0.002

1/2

5/8

3/4

1

1 1/4

1 1/2

2

G

(Table 68)

Note: 1. For Stainless Steel Shaft use suffi x -2X 2. See page 63 for specifi cation on Rail Supports

R1767 108 00

R1767 110 00

R1767 112 00

R1767 116 00

R1767 120 00

R1767 124 00

R1767 132 00

20° TYP.

G

C

D

A

EB

w

Rexroth shaft Support Assemblies

4.00

4.00

6.00

6.00

6.00

8.00

8.00

X

2.00

2.00

3.00

3.00

3.00

4.00

4.00

Y

LENGTHLENGTH

(TOLERANCE NONCUMULATIVE)(TOLERANCE NONCUMULATIVE)XY


Series R1770 0XX Low Profi le Shaft Support Assembly

Specifi cations: Materials: Support rails: AISI 1018 Steel Shaft: Ck-55 carbon steel / X46 Cr13 stainless steel Surface Finish: Support rail: Steel mill fi nish Shaft: 8 to 13 RA micro inches Base hole location: +/- .005’’ non-cumulative

Order Example:Part Number ---- R1770 016 08,120’’material----Standard carbon steeldiameter----1’’ nominal class LSupport Rail mounted to shaftLength----120’’ long

Rexroth Shaft Support Rail Assemblies

(Figure 25)

(Table 69)

1/2

3/4

1

R1770 008 08

R1770 012 08

R1770 016 08

0.562

0.750

1.000

0.370

0.510

0.690

0.250

0.375

0.500

0.341

0.420

0.560


Shaft/Rail Assembly

Part Number (1) Carbon Steel Ck-55 Class L

B

+/-0.010

CW

+/-0.010

Support Rail Assembly Selection Table

E

Ref.

6-32

10-32

1/4-20

0.169

0.221

0.281

R1768 108 00

R1768 112 00

R1768 116 00

F

Bolt Hole Part Number for Rail Support(2)

Note: 1. For Stainless Steel shaft use suffi x -2X 2. See page 64 for specifi cation on Rail Supports

A

+/-0.002

(Old Series R1700 6XX 37)

W

W


High Profi le RailsR1767 1../ R1767 0..

Flange style shaft support rail available plain or predrilled. Provides support to shaft assemblies where defl ection is a concern.

Low Profi le RailsR1768 1../ R1768 0..Low profi le shaft support rail available in plain or predrilled. Provide a rigid sup-port and a lower center of gravityfor shaft assemblies.

Support BlocksR1759 00..

Provides a quick and effective way to support a shaft assembly where there is little or no concern for defl ection.

Rexroth Shaft Support Rails

63

64

65

Shaft Support Rail Products Overview

Page


Rexroth Support Rails

1/2

5/8

3/4

1

1 1/4

1 1/2

2

R1767 108 00

R1767 110 00

R1767 112 00

R1767 116 00

R1767 120 00

R1767 124 00

R1767 132 00

1.125

1.125

1.500

1.750

2.125

2.500

3.250

1.50

1.62

1.75

2.12

2.50

3.00

3.75

0.25

0.31

0.38

0.50

0.56

0.69

0.88

0.19

0.25

0.25

0.25

0.31

0.38

0.50


Part Number(1)

Predrilled

A+/- 0.002

B CW D

(Table 70)

Support Rail Selection Table

E

1.000

1.125

1.250

1.500

1.875

2.250

2.750

F

#6

#8

#10

1/4

5/16

5/16

3/8

GAssembly

Bolt

6-32x7/8

8-32x7/8

10-32x1-1/4

1/4-20x1-1 1/2

5/16-18x1-3/4

3/8-16x2

1/2-13x2-1/2

H

0.17

0.19

0.22

0.29

0.34

0.41

0.53

Note: (1) Part number for non-drilled rail support is R1767 0XX 00.

X Y

4.00 2.00

4.00 2.00

6.00 3.00

6.00 3.00

6.00 3.00

8.00 4.00

8.00 4.00

Series R1767 1XX 00 High Profi le Support Rails

Rexroth Shaft support rails are available in three confi gurations: Plain, predrilled or special machined.

Support rails are available in shaft diameter sizes 1/2’’ to 2’’ as specifi ed in the table below. For shaft sizes not listed, select the closest to that needed. If a shaft falls midway between specifi ed diameters, use the next larger rail.

Standard rails are 24’’ long. To support longer shafts, several rails may be used in tandem. For shorter shafts, rails may be ordered pre-cut to fi t. Also for user convenience, Rexroth support rails have pre-grooved centerlines for easy, accurate drilling of additional holes.

Specifi cations Materials: 6061-T6 aluminum extrusion Surface fi nish: Aluminum mill fi nish Length: 24’’ (tolerance +0, -3/32’’) Base hole location: +/- 0.015’’ noncumulative

(Figure 25)

STANDARD LENGTH 24"+ 0, - 3/32

(TOLERANCE NONCUMULATIVE)XY

G

20° TYP.

HA F

D JEB

CW


Series R1768 1XX Low Profi le Support Rails

Rexroth Low support rails provide for a very compact and rigid assembly, ideal for designs where the steel shaft can be mounted from below. This ensures a rigid structure by securing the mounting surface, low support rail and shaft together at each mounting point.

Each low support rail is available in standard lengths of 48’’.

Specifi cations Materials: AISI 1018 Steel Length: 48’’ (tolerance +0, -3/32’’) Base hole location: +/- 0.005’’ noncumulative

(Table 71)

1/2

3/4

1

R1768 108 00

R1768 112 00

R1768 116 00

0.562

0.750

1.000

0.370

0.510

0.690

0.250

0.375

0.500

0.341

0.420

0.560


Part Numbers

Predrilled

B

+/-0.010

CW

+/-0.010

Support Rail Selection Table

E

Ref.

6-32

10-32

1/4-20

0.169

0.221

0.281

4.000

6.000

6.000

F

Bolt Hole

X

+/-0.005

Y

+/-0.005

2.000

3.000

3.000

Note: (1) Part number for non-drilled rail support is R1768 0XX 00

A

+/-0.002

(Old Series R1767 XXX 37)

W

(Figure 26)

Rexroth Support Rails


Series R1759 XXX Support Blocks

Rexroth Series R1759 - Shaft Support Blocks may be used at end or intermediate positions on stationary shafts. They are ideal where loads are light and defl ections between supports pose no problem.

Supports must not interfere with bushing or carriage travel. Shimming is suggested for high precision applications to eliminate the effect of variations in base fl atness or support manufacturing tolerances. These blocks provide quick, fi rm clamping of shafts, reducing the need for specialized mountings and miscellaneous hardware.

Rexroth Support Blocks

1/2

3/4

1

1 1/4

1 1/2

2

R1759 008 01

R1759 012 01

R1759 016 01

R1759 020 01

R1759 024 01

R1759 032 01

1.00

1.25

1.50

1.75

2.00

2.50

2.00

2.50

3.06

3.75

4.38

5.50

0.63

0.75

1.00

1.13

1.25

1.50

1.63

2.13

2.56

3.00

3.50

4.50


Part Number L N C O

Support Block Selection Table

D

1.50

2.00

2.50

3.00

3.50

4.50

A

0.25

0.31

0.38

0.44

0.50

0.63

P

0.88

1.25

1.50

2.00

2.25

3.00

Weight(lbs)

0.20

0.41

0.76

1.30

1.87

3.74


1/2

3/4

1

1 1/4

1 1/2

2

Part Number H

Mounting Hole

Bolt Hole

#8

#10

1/4

5/16

5/16

3/8

3/16

7/32

9/32

11/32

11/32

13/32

R1759 008 01

R1759 012 01

R1759 016 01

R1759 020 01

R1759 024 01

R1759 032 01

(Table 72)

(Figure 27)

LL

CC

OO

DD

NN

PP

HH AA


(Table 73)

(1) Reference dimension only(2) Commercial type with end lugs**Corrosion-resistant material

Note: XR-type made of Spring Steel, XRS-type made of Nickel Plated Spring Steel

(Figure 28)

Free I.D.

Tol.

MountedO.D.(1)

A+/-.001

T+/-.001

R987 145 915 XR-4A

R987 146 891 **XRS-4A

R987 145 916 XR-4A

R987 146 892 **XRS-6A

R987 145 917 XR-4A

R987 146 893 **XRS-8A

R987 145 918 XR-10A

R987 146 888 **XRS-10A

R987 145 916 XR-12A

R987 146 889 **XRS-12A

R987 145 911 XR-16A

R987 146 890 **XRS-16A

R987 145 919 XR-20A

R987 145 912 XR-24A

R987 145 916 XR-32A

call factory XR-40(2)



0.469

0.588

0.821

1.059

1.176

1.468

1.886

2.239

2.838

3.468

4.223

5.631

+0.000

- 0.020

+0.000

- 0.025

+0.000

- 0.035

+0.000

- 0.040

+0.000

- 0.045

+0.000

- 0.055

+0.000

- 0.065

+0.000

- 0.080

+0.000

- 0.100

+.0200

- .0300

+.0200

- .0300

+.0200

- .0400

0.539

0.658

0.905

1.159

1.276

1.592

2.036

2.395

3.024

4.310

5.180

6.910

0.035

0.035

0.042

0.050

0.050

0.062

0.075

+/-.002

0.078

0.093

--------

--------

--------

0.035

0.035

0.042

0.050

0.050

0.062

0.078

0.093

0.109

+/-.003

0.109

+/-.003

0.125

+/-.004

External Ring Selection Table

Rexroth External Retaining Rings

MOUNTED O.D.A

T

ØNew Part Old Part Number Number


Notes

Bosch Rexroth CorporationCorporate Headquarters5150 Prairie Stone ParkwayHoffman Estates, IL 60192-3707Telephone (847) 645-3600Facsimile (847) 645-6201

Bosch Rexroth CorporationIndustrial Hydraulics2315 City Line RoadBethlehem, PA 18017-2131Telephone (610) 694-8300Facsimile (610) 694-8467

Bosch Rexroth CorporationElectric Drives and Controls5150 Prairie Stone ParkwayHoffman Estates, IL 60192-3707Telephone (847) 645-3600Facsimile (847) 645-6201

Bosch Rexroth CorporationPneumatics1953 Mercer RoadLexington, KY 40511-1021Telephone (859) 254-8031Facsimile (859) 281-3491

Bosch Rexroth CorporationMobile Hydraulics1700 Old Mansfield RoadWooster, OH 44691-0394Telephone (330) 263-3300Facsimile (330) 263-3333

Printed in the United States RA 99 110

Bosch Rexroth CorporationLinear Motion andAssembly Technologies14001 South Lakes DriveCharlotte, NC 28273Telephone (800) 438-5983Facsimile (704) 583-0523www.boschrexroth-us.com

linear bushings and shafts inch series - bosch rexroth … · linear bushings and shafts inch...

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